Vaata reede, 9 september 2016 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2016 Sep 09 1230 UTC

SIDC Forecast

Päikesepursked ehk loited

C-class flares expected, (probability >=50%)

Geomagnetism

Active conditions expected (A>=20 or K=4)

Päikese prootonid

Quiet

	10cm flux	Ap
09 Sep 2016	096	005
10 Sep 2016	096	005
11 Sep 2016	095	018

Bulletin

NOAA 2585 retained its small delta structure and produced several B-class events, the strongest a B8.2 flare peaking at 19:17UT. NOAA 2588 produced a B7.9 flare peaking at 03:23UT. About an hour later, this event was followed by the disappearance of the southern portion of a small filament just 10 degrees southeast of this active region. Only mild coronal dimming was observed in AIA193, and no type II radio-burst was reported. The 40-degrees long filament in the northwest quadrant remained quiet. Currently available coronagraphic imagery revealed no earth-directed coronal mass ejections (CME).

A C-class flare is possible, with a small chance on an isolated M-class event.

Solar wind speed was near nominal values, decreasing further from 460 to 410 km/s. Bz fluctuated between -4 and +5 nT, being mostly positive. The interplanetary magnetic field (IMF) was predominantly directed away from the Sun (positive). Geomagnetic activity evolved from mostly unsettled to quiet.

Mostly quiet to unsettled geomagnetic conditions are expected. There's a small chance that a high speed stream from polar coronal hole extensions, in particular from one at +30 degrees, may influence the earth environment from 11 September onwards, increasing the likelihood on an active geomagnetic episode.

Today's estimated international sunspot number (ISN): 079, based on 19 stations.

Solar indices for 08 Sep 2016

Wolf number Catania	055
10cm solar flux	095
AK Chambon La Forêt	016
AK Wingst	014
Estimated Ap	015
Estimated international sunspot number	053 - Based on 29 stations

Noticeable events summary

Provided by the Solar Influences Data analysis Center© - SIDC - Processed by SpaceWeatherLive

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